Sinking-to-bottom type shrimp catcher

Abstract

The invention discloses a sinking-to-bottom type shrimp catcher, and aims at providing the sinking-to-bottom type shrimp catcher which is small in yield, convenient to operate and capable of automatically floating up and automatically conducting sampling after catching shrimps. The sinking-to-bottom type shrimp catcher comprises a supporting frame and a plurality of automatic floating-up catcher bodies arranged on the supporting frame. Each automatic floating-up catcher body comprises a vertical limiting sleeve arranged on the supporting frame, a mesh-shaped shrimp catching cylinder inserted in the vertical limiting sleeve, a floating ball and an automatic releasing device arranged on the mesh-shaped shrimp catching cylinder, wherein an upper limiting block is arranged at the position, above the vertical limiting sleeve, of the upper portion of the outer side face of the mesh-shaped shrimp catching cylinder, an inverted conical limiting sleeve with the section area gradually increased from bottom to top is arranged in the middle of the inner bottom face of the mesh-shaped shrimp catching cylinder, the upper end and the lower end of the inverted conical limiting sleeve are provided openings, a shrimp inlet corresponding to the lower end opening of the inverted conical limiting sleeve is formed in the middle of the bottom face of the mesh-shaped shrimp catching cylinder, and a buoyancy device capable of making the mesh-shaped shrimp catching cylinder float up is arranged in the mesh-shaped shrimp catching cylinder.

Description

technical field [0001] The invention relates to a catching device, in particular to a bottom-sinking shrimp catcher. Background technique [0002] Due to the destruction and pollution of the ecological environment of the water area, the quality of aquatic products living in the water area is seriously affected. On the other hand, with the improvement of people's living standards, while the production and consumption of aquatic products have greatly increased, the quality of aquatic products has also attracted more and more attention. Therefore, the research on whether the quality of aquatic products is affected by pollution has gradually been paid attention to; but before the quality monitoring of aquatic products, it is first necessary to capture the aquatic products samples to be tested. [0003] Most of the current shrimp catching devices are shrimp nets and shrimp pots used for fishing; when catching shrimp, the shrimp nets or shrimp pots are lowered into the water area...

AI Technical Summary

Problems solved by technology

At present, the catches of shrimp nets and shrimp pots used for this kind of fishing are large, and they are not suitable for monitoring the quality of aquatic products in waters to catch shrimps to be tested.

On the other hand, the current shrimp nets and shrimp cages used for this fishing need to be manually operated to lift the shrimp nets or shrimp cages, which is not only inconvenient to operate, but also often requires multiple operations to catch shrimp; It is more inconvenient when fishing shrimp in deep water areas

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